Spiked roller or not ?

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2020Tiling

Hi , I seem to be doing something wrong when I self level floors, they never are flat after I have used self leveller ? I recently self levelled over a chip board floor that had old adhesive stuck too it then over boarded with cement board and still had too build the tiles up with adhesive to make the floor flat? I used the correct slc and mixed it to the manufacturers instructions. Would a spiked roller help with the slc process? :smilewinkgrin:
 
Spiked rollers are for removing air bubbles... what you could do is make up a pin rake with screws and 2x1...
 
Generally slc's aren't really self LEVELLING but rather self smoothing, there's is a little more to it than pour and walk away.
Phil Hobson has recently posted a great thread on this subject you will find it very helpful.
Search function will be your friend ;-)
 
self leveling is really self smoothing IMO.......two hits or use the batten method......like Phil.......In my time I have also fixed Drywall screws into a floor..........find your high point and work away from that with a straight edge.....screwing drywalls as you go....500mm apart.....when you are finished you will have the tops of the screws as level across the floor.....latex to them and bobs your uncle!........

that is my helpful post for the month sorted!!!.......hehehehehheheehhehe

all the best

Lee
 
I am investing in one of these...

647324.jpg
 
They are used like these ones lee ... good for bigger floors and pulling SLC to a said depth..

[video=youtube;c0C3peObawo]http://www.youtube.com/watch?v=c0C3peObawo[/video]
 
nice vid Dave....but I guess I was right that they are like the old carbide trowels.....they have a fixed depth......and therefore will screed the humps and bumps of the floor less the "leveling" ability of the SLC......

its not for me......
 
I have the Regina pin rake but almost went for the skid rake, I wonder if you could use the skid rake on UHF?
 
if you are "skimming" a flat floor it will do the job quicker than any other method...I am sure.........

here is a carbide tipped trowel....old school full bed trowel for those that have never heard of it.......almost the same principal IMO:

31889_1192492.jpg
 
nice vid Dave....but I guess I was right that they are like the old carbide trowels.....they have a fixed depth......and therefore will screed the humps and bumps of the floor less the "leveling" ability of the SLC......

its not for me......

Try one mate, they are great for levelling/smoothing/sorting out duff floors!
Different to the carbide trowel as the adhesive didn't move, the smoothing compound moves about and slumps/levels into the dips if mixed nice and smoothly
 
if you are "skimming" a flat floor it will do the job quicker than any other method...I am sure.........

here is a carbide tipped trowel....old school full bed trowel for those that have never heard of it.......almost the same principal IMO:

View attachment 52577


I could never see how these trowels worked as they put no key onto the floor, yes you got the floors flat, but there are no teeth to bite the adhesive into the floor, quality leveling compounds seem to key themselves in.
 
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Try one mate, they are great for levelling/smoothing/sorting out duff floors!
Different to the carbide trowel as the adhesive didn't move, the smoothing compound moves about and slumps/levels into the dips if mixed nice and smoothly

what I ment Bugs was.........if you used SLC and spread it about with a carbide tipped trowel.....the effect would be the same....IMO.......you are "pushing/ pulling" the slc to a fixed depth....and therefore by proxy you are following the floor.......but the slc will "smooth" a bit..............I am better off with my method........of trowel, roller, screws, datums etc............what with these new 50mm latexes and all!"!!!!

all the best lads...and TBH if its sorts you out then great.....we are all looking for a solid bed EH!

Lee
 
Lee. the 2 feet are adjustable up to 20mm deep, so not fixed in-situ..

Okay Dave......it is interesting........but, I still think it is fixed at the height you set the "FEET"......the natural verlocity of water/latex is key......its great if the screed/boards are not that rough.......IMO....

Oh and I have been wrong before....and I will be again........ask my wife.........but please dont do it while she is raking the skid marks from my skid pants.....

all the best

Lee
 
I think these are useful with them being 600mm wide ... so you get a more even pull on the slc than say a lot smaller rake..
 
I think these are useful with them being 600mm wide ... so you get a more even pull on the slc than say a lot smaller rake..
I agree......but I honestly think you would be better off "modifing a broom" (remove all the bristles)......with six inch nails (or a plastic garden rake for electric underfloor)........flood the floor with SLC......put on your gardening boots on and RAKE............the nails/rake will pull the SLC about........and it will be flatter that using a fixed depth system IMO.......

as you will be using the natural verlocity of fluids..........
 
Have a spiked roller and find it next to useless.

Not convinced about rakes either as you're just following a floor. One/two hits with a straight edge pulled over works for me.
 
I think I posted in another thread about the spiked rollers, I wasn't impressed. But if you try my method ie. forming bays and flooding. I use Levelflex or Mapei renovation screed, a word of warning, make sure you fill all old services.

Don't make the mistake I made the other day, I thought I had filled all the holes in this 1st floor bathroom with foam and compo, as I came to my last pour I heard a shout from the ground floor "hey Phil are you leveling two floors at once?" I had missed one hole partially hidden under the plasterboard, my slc was flowing to the living room below.As luck had it this is a raw building site, so no damage done, glad it wasn't a new cream carpet below,:yikes:
 

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